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Deposits (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Time Deposits $ 201,623,000 $ 182,595,000  
Interest Expense, Time Deposits 2,570,000 2,156,000 $ 1,920,000
Brokered Deposits 19,447,000 13,567,000  
Related Party Deposit Liabilities 20,262,000 19,279,000  
Demand Deposit [Member]      
Demand deposit overdrafts reclassified as loans $ 136,000 $ 285,000